/// <summary>
/// 初始化 <see cref="DbExpressionVisitor"/> 类的新实例
/// </summary>
/// <param name="ag">表别名解析器</param>
/// <param name="builder">SQL 语句生成器</param>
public DbExpressionVisitor(AliasGenerator ag, ISqlBuilder builder)
{
_ag = ag;
_builder = builder;
_provider = (DbQueryProvider)_builder.Provider;
_visitedStack = new MemberVisitedStack();
}
/// <summary>
/// 初始化 <see cref="DbContextBase"/> 类的新实例
/// <param name="connString">数据库连接字符串</param>
/// <param name="commandTimeout">执行命令超时时间</param>
/// </summary>
public DbContextBase(string connString, int?commandTimeout)
{
XFrameworkException.Check.NotNull(connString, nameof(connString));
_connString = connString;
_commandTimeout = commandTimeout;
_isDebug = false;
_isolationLevel = null;
_provider = (DbQueryProvider)this.Provider;
}
/// <summary>
/// 实例化 <see cref="TranslateContext"/> 类的新实例
/// </summary>
/// <param name="context">当前查询上下文</param>
public TranslateContext(IDbContext context)
{
XFrameworkException.Check.NotNull(context, nameof(context));
_context = context;
_provider = (DbQueryProvider)_context.Provider;
}